Are these pullets?

Lavender Orpington was a single hatch, used a mirror, stuffed toy & feather duster until I found company (Silkie). They were hatched about a day apart, making 4 wks this Thursday. Like everyone else with chicks wondering what I have, hoping they both are pullets. I've done the "turn on back & watch if they extend legs or draw up", they draw their legs up (pullets, yippee). At 3 days tried "feather sexing", will admit not sure what I was doing but both looked like the primary feathers were longer than the coverts (pullets, wishful thinking).
The Lavender has a comb & waddle but it's yellow, not pink or red, tail feathers & back are feathering, it's more timid but will come to me (mealworm training)....Pullet or Cockerel?
The Silkie's really sweet, loves to cuddle & be handled. Wing feathers are out, the back is starting but nothing on the tail yet. I've felt for a comb but it's smooth and don't see anything. It's "bolder" will come right up to me, never had a Silkie so this is all new for me. Pullet of Cockerel?

Your Lavender Orpington appears to be a cockerel; that is a lot redness/growth of the comb for a pullet of that age. He also shows little tail development and a more gangly stance, which is typical of a cockerel. Your Silkie is really too young to tell his gender, as Silkies are notorious for being difficult to sex, especially before they are fully feathered.

Still, I wouldn't assume anything yet. I'd post more photos in a few weeks, and then we'll see.

Yes the lavender Orpington is most likely a roo but don’t worry too much! At that age he could still turn into a pullet.The only 100% way to tell the difference between a pullet and a rooster is too hear them crow or lay an egg.Oh and another fairly accurate way to tell the sex of a silkie is too see if the have “streamers” coming out of the back of their crest.That means it is a roo. But the streamers only start to develop when they are around 4-6 months!So you will still have to wait a while.I would like to help you more if you need it so if you want you could post more pics when they are a bit older.(maybe 2-3 weeks?) Good luck and I hope I helped!

Thanks for all your input, I was thinking the Orpington a cockerel, can't have no Roos here but still hoping. The waiting game is frustrating, getting attached to both. Will post more pictures of the Orpington in a couple of weeks, the Silkie's really slow in developing which I've been told, he/she's so sweet. Thanks again...